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        <h1 class="fnt-sixcaps">Haba <span>Stress</span> Engineering</h1>
        <p class="description">Specializing in Heat Treatment &amp; Engineering Inspection</p>        
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    <h2>Overview</h2>
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     <blockquote>"A competent own heat treatment technology is a key factorfor high product quality"</blockquote> 
     
    <p>Heat treatment is a process based on a highly specialised technology aimed at giving metals specials properties 
    on the surface and in depth - as high strength and hardness. For us, heat treatments are therefore essential for 
    making our gearbox components capable of withstanding the stress levels that are forecast in the design stage, 
    ensuring superior quality standards during the total operation time.</p>

    <p>The outsourcing of these processes, a prevailing practice among some gearbox manufacturers, frequently entails logistic problems connected with 
    transport, storage and off-site processing of workpieces and this leads to longer delivery times and higher 
    costs.Third-party processing firms may gauge their treatments on average or standard values that can't be 
    everytime the optimum for the gears of a gearbox.</p>

    <p>This is the reason why <strong>Haba Stress Engineering</strong> carries out its
    heat treatment at its own premises in own facilities, adopting the specific standards that are ideal for its 
    products, thus avoiding all inconveniencies of external processing.
    
    <p>The same heat treatment processes and procedures applied to our gears and components are successfully used
     for commercial heat treatment jobs,so that the highest customers quality requirements and specifications can
     be guaranteed.</p>
  
      <p>To minimize residual stress, it is crucial that the suction roll shell undergoes heat treatment and is 
       cooled in a controlled manner. The heat treatment process also ensures that the weld joints have the 
       same excellent properties as the rest of the material.</p>
       
         <h3>Vertical heat treatment</h3> 
         <p>The suction roll shell undergoes heat treatment in a vertical position in the furnace to ensure that its
         round shape is not distorted by its own weight. The entire heat treatment process can be divided into 
         three stages: heating, holding time and cooling. The cooling stage is crucial for obtaining the right
         properties. A uniform cooling rate is achieved by blowing air along the inside of the suction roll shell
         during the cooling process. The difference in temperature between the inside and outside of the suction
         roll shell must never exceed 150&deg;C (302&deg;F). In practice, it is no more than 100&deg;C (2 12&deg;F).
         The entire process of heating, holding time and cooling is controlled by thermal couples placed around the inner and outer diameter of the
         suction roll shell along its entire length.</p>
         <h3>Compressive stress on the inner and outer walls</h3>
        <p> The controlled heat treatment process improves the service life of the suction roll shell.
          By controlling the cooling process so that the temperature on both the inside and outside of the
          suction roll shell is constantly lower than that at its core, a compressive stress is created on the 
          inside and outside of the shell. Compressive stress means that the suction roll shell can handle
          greater loads and is more resistant to corrosion fatigue in those parts where cracking is otherwise 
          most likely to occur.</p>
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          <h4>Contact Us</h4>
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            <li><strong>Haba Stress Engineering</strong></li>
            <li>No. 59, Jalan Bukit 9, Kaw. MIEL, Bandar Seri Alam,</li> 
            <li>81750 Masai, Johore, Malaysia</li>
            <li>Email: info@heatstress.com.my</li>
            <li>Tel: (+6) 07-217&nbsp;3013</li>
            <li>Mobile: (+6) 013-721&nbsp;3013</li>
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